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Aleks04 [339]
3 years ago
7

A multiple-choice test contains 10 questions. there are four possible answers for each question. (a) in how many ways can a stud

ent answer the questions on the test if the student answer every question? (b) in how many ways can a student answer the questions on the test if the student can leave answers blank?
Mathematics
1 answer:
devlian [24]3 years ago
5 0
A). 4^10 = 1,048,576 ways

b). 5^10 = 9,765,625 ways
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A plane flies at a steady rate of 40 mph while a second plane flies at a steady rate of 100 mph. The planes are 200 miles apart
Brums [2.3K]

Answer:

1\ \text{hour}\ 25\ \text{minutes and }12\ \text{seconds}

Step-by-step explanation:

The combined distance that both planes will cover is 200 miles

Time taken by both planes will be the same (t)

\text{Distance}=\text{Speed}\times \text{Time}

So, the combined distance is

40t+100t=200\\\Rightarrow 140t=200\\\Rightarrow t=\dfrac{200}{140}\\\Rightarrow t=1.42\ \text{hours}=1\ \text{hour}\ 25\ \text{minutes and }12\ \text{seconds}

They will meet in 1\ \text{hour}\ 25\ \text{minutes and }12\ \text{seconds}.

7 0
3 years ago
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Evaluate. <br> 6[5(3-9)-1]+2/7(8-2)+4
GREYUIT [131]
If you would like to evaluate 6 * [5 * (3 - 9) - 1] + 2 / 7 * (8 - 2) + 4, you can calculate this using the following steps:

6 * [5 * (3 - 9) - 1] + 2 / 7 * (8 - 2) + 4 = 6 * [5 * (-6) - 1] + 2/7 * 6 +  4 = 6 * [- 30 - 1] + 12/7 + 4 = 6 * [- 31] + 12/7 + 4 = - 186 + 12/7 + 4 = - 182 + 12/7 = - 1274/7 + 12/7 = - 1262/7

The correct result would be - 1262/7.
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What is the slope of the line that passes through the pair of points?
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I think the answer is going to be a
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3 years ago
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Can someone help me with this please ?
rusak2 [61]
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Which inequality is shown?
gogolik [260]

Answer:

affirmative action

Step-by-step explanation:

4 0
3 years ago
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